Differential scanning calorimetry (DSC) curves were obtained by a DSC-50 cell (Shimadzu, Kyoto, Japan) using aluminum crucibles. Approximately 2 mg of samples were put into these crucibles, and the measurements were made under a dynamic nitrogen atmosphere (50 mL/min) at a heating rate of 10 °C/min in the temperature range 25–600 °C. The DSC cell was calibrated with indium (melting point (m.p.) = 156.6 °C and fusion enthalpy (ΔHfus.) = 28.54 J/g) and zinc (m.p. = 419.6 °C). Thermogravimetric (TG/DTG) curves were obtained with the TGA-50 thermobalance (Shimadzu, Kyoto, Japan) using platinum crucibles that contained roughly 3 mg of a sample. These measurements were made under a dynamic nitrogen atmosphere (50 mL/min) at a heating rate of 10 °C/min in the temperature range 25–900 °C.
Tga 50 thermobalance
Manufactured by Shimadzu
Sourced in Japan
The TGA-50 thermobalance is a laboratory instrument designed to measure the change in the mass of a sample as a function of temperature or time. It is primarily used for thermogravimetric analysis (TGA), which is a technique that allows for the characterization of materials based on their thermal stability and composition.
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3 protocols using tga 50 thermobalance
1
Thermal Characterization of Materials by DSC and TGA
2
Elemental and Spectroscopic Characterization
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C, H and N analyses were carried out with a Thermo Scientific Flash 2000 elemental analyzer. Analytical determination of Na was performed by FAAS on a Perkin Elmer AAnalyst 200 with a 10-cm burner and operated at 589 nm. The hollow cathode lamp (Photron) was operated under the manufacturer's recommendations. The composition of the flame was acetylene (2.5 L/min)-air (10.0 L/min). UV-Vis spectra were recorded in a Shimadzu 1603 spectrophotometer. The FTIR absorption spectra (4000-400 cm -1 ) of the complexes and free ligands were measured as KBr pellets with a Shimadzu IR Prestige-21 instrument. Thermogravimetric measurements (TGA) were done on a Shimadzu TGA 50 thermobalance, with a platinum cell, working under flowing nitrogen (50 mL min -1 ) and at a heating rate of 0.5 °C min -1 (room temperature to 80 °C range) and 1.0 °C min -1 (80-350 °C range). 1 H-NMR spectra were recorded with a Bruker Avance 400 MHz spectrometer in D 2 O at 27 °C. The peak for residual solvent (H 2 O, 4.79 ppm) was used as reference [34] . 31 P-NMR spectra were obtained with the same spectrometer at 161,976 MHz and referred to H 3 PO 4 85% (0.00 ppm).
3
Thermal Analysis of Materials
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A TGA-50 thermobalance (Shimadzu, Kyoto, Japan) was used. Alumina crucibles containing the sample were subjected to a heating rate of 10 °C min−1 over a temperature range of 30 to 300 °C in a dynamic N2 atmosphere (100 mL min−1).
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